remulus

Hi, I have a domain www.domain.us where i have a userprofile website located, and also a APP landingpage for the APP. Both are running on PHP. I would like to know, if it is possible to code the following and how: If i go from to the domain from a computer, it forwards to (shows) the userprofile website, and if i go to the domain on a smartphone/iphone/ipad/tablet it forwards to (shows) the app landingpage. All automatic so the user dont get any notice. Is it possible to code and how? Best regards Brian Petersen